Wire exterior body and exterior-covered wire harness

Abstract

A wire exterior body and an exterior-covered wire harness in which damage by an attaching member is prevented are provided. A wire exterior body (3) to be mounted on the outer periphery of an electric wire (wire harness) (2), the wire exterior body being formed of a resin sheet that is bent, includes a plurality of wall parts (4) extending along an extending direction of the electric wire and forming an accommodating part (5) that accommodates the electric wire. Among the plurality of the wall parts (4), at least one wall part (upper lid wall part (45)) has a through-hole (47), penetrating in a thickness direction of the resin sheet, into which an attaching member (61) attachable to a vehicle body is inserted, and a groove (a lower surface groove (48) or an upper surface groove (49)) in which a thickness of the resin sheet is reduced is formed on a part around the through-hole (47) on at least one surface of an upper surface (45c) and a lower surface (45d) facing the thickness direction.

The invention claimed is: 
     
       1. A wire exterior body to be mounted on an outer periphery of an electric wire, the wire exterior body being formed of a resin sheet that is bent, the wire exterior body comprising
 a plurality of wall parts extending along an extending direction of the electric wire, the plurality of the wall parts forming an accommodating part that accommodates the electric wire, wherein 
 among the plurality of the wall parts, at least one wall part has a through-hole, penetrating in a thickness direction of the resin sheet, into which an attaching member attachable to a vehicle body is inserted, and a groove in which a thickness of the resin sheet is reduced is formed on a part around the through-hole on at least one surface of an upper surface and a lower surface facing the thickness direction. 
 
     
     
       2. The wire exterior body according to  claim 1 , wherein
 the groove is formed at positions facing each other over the through-hole. 
 
     
     
       3. The wire exterior body according to  claim 1 , wherein
 the groove is an annular groove surrounding the through-hole. 
 
     
     
       4. The wire exterior body according to  claim 1 , wherein
 a width of the groove is 0.7 mm or more and 0.9 mm or less. 
 
     
     
       5. The wire exterior body according to  claim 1 , wherein
 a depth of the groove is 60% or more and 80% or less of the thickness of the resin sheet. 
 
     
     
       6. The wire exterior body according to  claim 1 , wherein
 a density of the resin sheet in the groove is higher than a density of the resin sheet except for the groove in the upper surface and the lower surface facing the thickness direction, and is 400 Kg/m 3  or more and 1200 Kg/m 3  or less. 
 
     
     
       7. An exterior-covered wire harness comprising:
 a wire harness; and 
 the wire exterior body according to  claim 1 , wherein 
 the wire exterior body is mounted on an outer periphery of the wire harness. 
 
     
     
       8. A wire exterior body to be mounted on an outer periphery of an electric wire, the wire exterior body being formed of a resin sheet that is bent, the wire exterior body comprising
 a plurality of wall parts extending along an extending direction of the electric wire, the plurality of the wall parts forming an accommodating part that accommodates the electric wire, wherein 
 the plurality of the wall parts includes a branch portion and/or a bent portion in the extending direction of the electric wire, and among the plurality of the wall parts, two wall parts facing each other over the accommodating part are provided across the branch portion and/or bent portion along the extending direction of the electric wire. 
 
     
     
       9. The wire exterior body according to  claim 8 , wherein
 branching of the branch portion and/or bending of the bent portion is formed toward a short direction of the two wall parts facing each other. 
 
     
     
       10. The wire exterior body according to  claim 8 , wherein
 one wall part forming the two wall parts facing each other is joined to at least one of the plurality of the wall parts in a direction extending from the branch portion and/or bent portion. 
 
     
     
       11. The wire exterior body according to  claim 8 , wherein
 at least a partial area of one wall part forming the two wall parts facing each other includes a wall-surface overlapping portion that overlaps at least one of the plurality of the wall parts, and in the wall-surface overlapping portion, the one wall part is joined to at least one of the plurality of the wall parts. 
 
     
     
       12. The wire exterior body according to  claim 11 , wherein
 the one wall part is divided in the wall-surface overlapping portion to form a boundary portion, and the one wall part is joined to at least one of the plurality of the wall parts in the boundary portion. 
 
     
     
       13. The wire exterior body according to  claim 8 , wherein
 the resin sheet is a thermoplastic resin foamed sheet. 
 
     
     
       14. The wire exterior body according to  claim 13 , wherein
 a density of the thermoplastic resin foamed sheet except for a bending portion is 200 Kg/m 3  or more and 700 Kg/m 3  or less. 
 
     
     
       15. The wire exterior body according to  claim 13 , wherein
 a thickness of the thermoplastic resin foamed sheet except for a bending portion is 0.50 mm or more and 4.0 mm or less. 
 
     
     
       16. The wire exterior body according to  claim 13 , wherein
 a density of a bending portion of the thermoplastic resin foamed sheet is 400 Kg/m 3  or more and 1200 Kg/m 3  or less. 
 
     
     
       17. The wire exterior body according to  claim 13 , wherein
 the thermoplastic resin foamed sheet includes a curved portion having R 0.1 mm or more and 1.0 mm or less in a cut surface. 
 
     
     
       18. The wire exterior body according to  claim 13 , wherein
 the thermoplastic resin foamed sheet includes a non-foam layer on both surfaces. 
 
     
     
       19. The wire exterior body according to  claim 18 , wherein
 a thickness of the non-foam layer is 10 μm or more and 100 μm or less. 
 
     
     
       20. The wire exterior body according to any one of  claim 13 , wherein
 Shore hardness (HSC) of the thermoplastic resin foamed sheet is 60 or more and 100 or less. 
 
     
     
       21. An exterior-covered wire harness comprising:
 a wire harness; and 
 the wire exterior body according to  claim 8 , wherein 
 the wire exterior body is mounted on an outer periphery of the wire harness.